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2. When processing a common elect on all channels but
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section 6
CONNECTING PERIPHERAL EQUIPMENT
1. IMPEDANCE
Input and output mpedarces should be consdered when
cornectirg this unit to other equipment.
Impedance is the resistance vaue against alternating cur¬
rents. such as sound signals and the unit used is the U
pi m). II the output ki peda ioo
d
a gven unit dees not
mach the hput impedance of arother, this nay result in
round distortion or even a oreakdown. In general, :he rule of
tnumb is that the output impedance should be low (low out)
anc the input impedance should be high (high in).
Refer to SPECIFICATIONS for the input and output im¬
pedances oi ths unit.
Mote:
Always use a Direct Box when connecting outputs
indicated in watts (W), sLch as those of an amplfiet cr
when connect ng instruments which require high input
impedances Failure :o do so may result in damage to the
power amplifier circut as well as the unit itself
2. ADJUSTING INPUT/OUTPUT LEVELS
'he level aefusment ol the incormrg signal to INPUT jocko
(35) or (36) is done with rhe TR W (2) so as tc prevent the
frecuent Hashing of the PEAK LED (1).
ADJUSTMENT PROCEDURES
First, set the NPIT FADER (15) within the C±odB range
since ths range is where the least loise/distorton occu's.
Then adjust he input signal using the TRIfi/ dial (2). The
TRIM is -60dBV (microphone level) when turned to the iar
right and - ICdBV (lire level) when furnec to the Iar eft.
While adjusting the signal, it may be corvenienl to press the
INPUT SOLO switch (13) of the particular channel. enabling
monitoring of the post-FADER signal. In addition, please ncte
that the PEAK LED will also Igh; when the signal to the
EQUALIZER SECIION (4) is oveloaded. Wnen adjusting
with the TRIM, it S highly recommended that al EQUALIZER
gains be turned to the licit portion.
1
, after the trirnmng is
finshed and the desired tone quality- adjusted, the PEAK
LED still turns on, them s overloading at the EQUALIZER
stage and either the input signal itself should be adjusted or
the trimming be done ovar again
All ths nominal inpul/output impedances for this unit except
for inputs to INPUT jacks (35) and (36), ore
10dBV (D.3V).
there-ore allowing drect hookups to most recording equip¬
ment Hnwever. for connections with equlpmer* with differing
ncminal impedances or professicna equpment (+4dRm
etc.), an attenuator or ine amplifie' (FOSTEX 5030 etc) will
be necessary.
B
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